<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>第一个js程序</title>
		<style>
			/*div{
				width: 200px;
				height: 200px;
				border: 2px solid yellow;
				border-radius: 50%;
				text-align: center;
				line-height: 200px;
			}*/
		</style>
		<link rel="stylesheet" href="../css/hello.css" />
	</head>
	<body>
		<div>123</div>
		<!--1、JS代码直接写在Script标签里面-->
		<!--<script>alert("Hell JavaScript")</script>-->
		<!--2、引用外部文件-->
		<script src="../js/hello.js"></script>
	</body>
</html>
